Web Reference: This is the video for Section 3.2: “Array access” (Ruby) from Learn Enough Ruby to Be Dangerous by Michael Hartl. There are different kinds of indexing available depending on obj: basic indexing, advanced indexing and field access. Most of the following examples show the use of indexing when referencing data in an array. The examples work just as well when assigning to an array. The most common approach is to explicitly specify the indices of the elements. For example, to access a single element of a matrix, specify the row number followed by the column number of the element. e is the element in the 3,2 position (third row, second column) of A. You can also reference multiple elements at a time by specifying their indices ...
YouTube Excerpt: Nick Rouse talks about queries with the CIS105 class. Queries are great for searching on existing data within tables in a ...
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